#181A3A#181A3A

#181A3A is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.5% C 0.061 H 278.0°. Best body text is #FFFFFF at 16.83:1 contrast (WCAG AA passes).

Color values

HEX	#181A3A
RGB	rgb(24, 26, 58)
HSL	hsl(236, 41%, 16%)
HSV	hsv(236, 59%, 23%)
CMYK	cmyk(58.6%, 55.2%, 0%, 77.3%)
CIE-LAB	lab(10.84, 10.00, -21.10)
CIE-LCH	lch(10.84, 23.35, 295.37°)
OKLab	oklab(23.52% 0.0084 -0.06)
OKLCH	oklch(23.52% 0.061 278)
XYZ	xyz(1.5096, 1.2384, 4.1617)
Luminance	0.0124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A3A #3A3818

analogous

#182B3A #181A3A #27183A

triadic

#181A3A #3A181A #1A3A18

tetradic

#181A3A #3A182B #3A3818 #183A27

square

#181A3A #3A182B #3A3818 #183A27

split-complementary

#181A3A #3A2718 #2B3A18

monochromatic

#090A16 #090A16 #181A3A #2A2D65 #3C4191

Accessibility & contrast

On white

16.83

#181A3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#181A3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A3A

16.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A3A	#FFFFFF	#000000	##FFFFFF
##181A3A	1.00	16.83	1.25	16.83
#FFFFFF	16.83	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C1F3B

Deuteranopia (green-blind)

#091C39

Tritanopia (blue-blind)

#0A2127

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #181a3a;
/* rgb */ color: rgb(24, 26, 58);
/* oklch */ color: oklch(23.5% 0.061 278.0);

Tailwind

colors: {
  custom: {
    50: '#585670',
    500: '#181a3a',
    950: '#000000',
  },
}

SCSS

$custom: #181a3a;
$custom-light: #585670;
$custom-dark: #000000;

JSON

{
  "hex": "#181a3a",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 58
  },
  "hsl": {
    "h": 236.471,
    "s": 41.463,
    "l": 16.078
  },
  "oklch": {
    "l": 0.23523,
    "c": 0.06061,
    "h": 278
  },
  "luminance": 0.01238
}

Semantic roles & 50–950 ramp

primary

#181A3A

secondary

#706D3E

accent

#CA57D1

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #181A3A

Body copy rendered with the generated semantic roles for this colour.

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